49140136778 has 16 divisors (see below), whose sum is σ = 77198835456. Its totient is φ = 23415076080.

The previous prime is 49140136729. The next prime is 49140136783. The reversal of 49140136778 is 87763104194.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1958501 + ... + 1983432.

It is an arithmetic number, because the mean of its divisors is an integer number (4824927216).

Almost surely, 2^49140136778 is an apocalyptic number.

49140136778 is a deficient number, since it is larger than the sum of its proper divisors (28058698678).

49140136778 is a wasteful number, since it uses less digits than its factorization.

49140136778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942229.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 49140136778 in words is "forty-nine billion, one hundred forty million, one hundred thirty-six thousand, seven hundred seventy-eight".